Question

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(2n-1)²

(7x-a)²

(3x+2y)²

(3a+1)²

(8x-7a)²

(10p+3q)²

(6-a)²

(2b+5c)²

(5-x)²​

Answer 1

Resposta:

Explicação passo a passo:

(2n-1)(2n-1)=

4n²-2n-2n+1=

4n²-4n+1

(7x-a)(7x-a)=

49x²-7ax-7ax+a²

49x²-14ax+a²

(3x+2y)(3x+2y)=

9x²+6xy+6xy+4y²=

9x²+12xy+4y²

(3a+1)(3a+1)=

9a²+3a+3a+1=

9a²+6a+1

(8x-7a)(8x-7a)=

64x²-56ax-56ax+49a²=

64x²-112ax+49a²

(10p+3q)(10p+3q)=

100p²+30pq+30pq+9q²=

100p²+60pq+9q²

(6-a)(6-a)=

36-6a-6a+a²=

36-12a+a²

(2b+5c)(2b+5c)=

4b²+10bc+10bc+25c²=

4b²+20bc+25c²

(5-x)(5-x)=

25-5x-5x+x²=

25-10x+x²